Are we getting a new class or job?

[Asiaine]

I guess the POV is a bit different when/if you've got multiple classes at 50's already.
/shrug

Quite, and that has to be considered. Also the class gameplay may not appeal to all. If they release a big sword wielder, some people may not care for it (like myself). If they release a dancer I'll jump on it (but many others would pass). What they need is content that a larger % of people would do. For example, Crystal Tower: There is a lot of people who will at least try it out.

At the end it comes down to simple formula:
Amount of hours spent consuming content (by all people, all worlds).
Amount of hours spent developing content.

They will go for best bang for buck option ^^; (Which is why we see a lot of features some would call insignificant... because they are 'cheap' enough to make and have a good return).